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Webster 1913 Edition

Unstable

Un-sta′ble

,
Adj.
[Cf.
Instable
.]
Not stable; not firm, fixed, or constant; subject to change or overthrow.
–
Un-sta′ble-ness
,
Noun.
Chaucer.
Unstable equilibrium
.
See
Stable equilibrium
, under
Stable
.

Webster 1828 Edition

Unstable

UNSTA'BLE

,
Adj.
[l. instabilis.]
1.
Not stable; not fixed.
2.
Not steady; inconstant; irresolute; wavering. James 1.

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